Does someone know how to print a square onto the command window using for loops????

12 visualizaciones (últimos 30 días)
for 1:5
fprintf('*') % am stuck right there

Respuestas (3)

Daniel Shub
Daniel Shub el 17 de Sept. de 2013
Editada: Daniel Shub el 17 de Sept. de 2013
I am not sure why you want to use a loop or fprintf. The simplest, but potentially not square enough solution for a filled square
N = 5;
x = repmat(char(42), N, N);
disp(x);
*****
*****
*****
*****
*****
For an unfilled square you can do
N = 5;
x = repmat(char(42), N, N);
x(2:end-1, 2:end-1) = char(32);
disp(x);
*****
* *
* *
* *
*****
On my system I get a squarer square with
x = repmat([char(42), char(32)], N, N)
* * * * *
* * * * *
* * * * *
* * * * *
* * * * *
Depending on how perfect you want, maybe you could use a thin space or a wide space.
For a filled diamond
a = [fliplr(tril(true(N))), tril(true(N)); triu(true(N)), fliplr(triu(true(N)))];
x = repmat(char(32), 2*N, 2*N);
x(a) = char(42);
disp(x)
**
****
******
********
**********
**********
********
******
****
**
For an empty diamond
a = [fliplr(triu(tril(true(N)))), triu(tril(true(N))); tril(triu(true(N))), fliplr(tril(triu(true(N))))];
x = repmat(char(32), 2*N, 2*N);
x(a) = char(42);
disp(x)
**
* *
* *
* *
* *
* *
* *
* *
* *
**
If you really need to use fprintf
y = mat2cell(x(:), ones(numel(x), 1), 1);
fprintf([repmat('%s', 1, 2*N), '\n'], y{:})
  4 comentarios
Rik
Rik el 17 de Oct. de 2022
@Usama Tanveer The answer to this question can be found in the documentation of the plot function, which is probably the first place you should have looked. Did you?

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Simon
Simon el 17 de Sept. de 2013
Hi!
You should start reading here: http://www.mathworks.com/help/matlab/control-flow.html This explains how to use loops and their syntax.
What do you mean with "square"?
  2 comentarios
Kevin Junior
Kevin Junior el 17 de Sept. de 2013
like printing shapes using asterix, for instance a rectangle, a square, a diamond i know I will definitely have to use nested loops
Walter Roberson
Walter Roberson el 17 de Sept. de 2013
Filled or outline only?
Some of the shapes will not require nested for loops.

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Kambiz Hosseinpanahi
Kambiz Hosseinpanahi el 26 de Jun. de 2018
Editada: Walter Roberson el 26 de Jun. de 2018
clc
clear
n=10;
A=repmat(char(42),n,n);
A(1:end-1,2:end)=char(32);
for i=2:10
A(i,i)=char(42);
end
disp(A);

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